I was wondering how much money it takes to charge an electric semi.

Many factors affect how much it will cost to charge an electric semi truck, including the battery capacity,

the cost of power in the area, and how rapidly the battery needs to be replenished.

Fast charging can be expensive, costing anywhere from $1.50/kWh to over $2.00/kWh.   

Costs can vary from less than $50 for a few hours of charging to several hundred dollars for an overnight charge,

all depending on how much electricity is utilised.

Long-distance truck charging could be prohibitively expensive because to the need for widespread access to fast chargers.

Charging an electric semi could be rather expensive in the end, albeit this depends on a wide range of circumstances.